ILD	interstitial lung disease
OLD	obstructive lung disease
HP	hypersensitivity pneumonitis
EGPA	eosinophilic granulomatosis with polyangiitis
BAL	bronchoalveolar lavage
BALF	bronchoalveolar lavage fluid
VC	vital capacity
FEV1	forced expiratory volume in 1 s
NK	natural killer
NKT	natural killer T
IL	interleukin
TNF-α	tumor necrosis factor α
IFN-γ	interferon gamma
VEGF	vascular endothelial growth factor
MCP-1	monocyte chemoattractant protein-1
HRCT	high-resolution computed tomography
TLC	total lung capacity
DLCO	diffusing capacity of the lungs for carbon monoxide
FVC	forced vital capacity
COPD	chronic obstructive pulmonary disease